<template>
    <div>
        <!-- 顶部滑动条区域 -->
        <div id="slider" class="mui-slider">
            <div id="sliderSegmentedControl" class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted mui-slider-indicatorcode mui-segmented-control mui-segmented-control-inverted">
                <div class="mui-scroll">
                    <a :class="['mui-control-item', item.id == 0 ? 'mui-active' : '']" v-for="item in cates" :key="item.id" @click="getPhotoListbyCateId(item.id)">
                        {{ item.title }}
                    </a>
                </div>
            </div>
        </div>

        <!-- 图片列表区域 -->
        <ul class="photo-list">
            <router-link :to="'/home/photoinfo/' + item.id" v-for="item in list" :key="item.id" tag="li">
                <img v-lazy="item.img_url">
                <div class="info">
                    <h1 class="info-title">{{ item.title }}</h1>
                    <div class="info-body">{{ item.zhaiyao }}</div>
                </div>
            </router-link>
        </ul>
    </div>
</template>


<script>
// 导入mui.js
import mui from '../../lib/mui/js/mui.min.js'
// 初始化滑动控件
// mui('.mui-scroll-wrapper').scroll({
// 	deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
// });

import { Toast } from 'mint-ui'

export default {
    data() {
        return {
           cates: [],           // 分类数组
           list: [],            // 图片列表数组
        }
    },
    methods: {
        // 获取分类数据
        getAllCategory(){
            this.$http.get("api/getimgcategory").then(result => {
                if (result.body.status === 0) {
                    // console.log(result.body)
                    result.body.message.unshift({
                        title: '全部',
                        id: 0
                    })
                    this.cates = result.body.message
                } else {
                    Toast("获取数据失败")
                }
            })
        },
        // 获取图片列表
        getPhotoListbyCateId(cateId){
            this.$http.get("api/getimages/" + cateId).then(result => {
                if (result.body.status === 0) {
                    console.log(result.body)
                    this.list = result.body.message
                } else {
                    Toast("获取数据失败")
                }
            })
        }
    },
    created() {
        this.getAllCategory();
        this.getPhotoListbyCateId(0);
    },
    mounted() {
        // 当组件的DOM结构被渲染好并放到页面中后，会执行这个钩子函数
        // 如果要操作元素，最好在该钩子函数里
        // 初始化滑动控件
        mui('.mui-scroll-wrapper').scroll({
        	deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
        });
    },
}
</script>

<style lang="scss" scoped>
    * {
        touch-action: pan-x;
    }

    .photo-list{
        list-style: none;
        margin: 0;
        padding: 10px;
        padding-bottom: 0;
        li{
            background-color: #ccc;
            text-align: center;
            margin-bottom: 10px;
            box-shadow: 0 0 9px #999;
            position: relative;
            img{
                width: 100%;
                vertical-align: middle;
            }

            // 懒加载的样式i
            img[lazy=loading] {
                width: 40px;
                height: 300px;
                margin: auto;
            }

            .info{
                color: white;
                text-align: left;
                position: absolute;
                bottom: 0px;
                background-color: rgba(0, 0, 0, 0.4);
                max-height: 84px;
                .info-title{
                    font-size: 14px;
                }
                .info-body{
                    font-size: 13px;
                }
            }
        }
    }

    
</style>
